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bio chapter 10
| Term | Definition |
|---|---|
| cell division | process by which a cell divides into two new daughter cells |
| asexual reproduction | process of reproduction involving a single parent the results in offspring that are genetically identical to the parent |
| sexual reproduction | type of reproduction in which cells from two parents unite to form the first cell of a new organism |
| chromosome | threadlike structure of DNA and protein that contains genetic information in eukaryotes, chromosomes are found in the nucleus; in prokaryotes, they are found in the cytoplasm |
| chromatin | substance found in eukaryotic chromosomes that consists of dna tightly coiled around histones |
| cellcycle | series of events in which a cell grows , prepares for division, and divides to form two daughter cells |
| interphase | period of the cell cycle between cell divisions |
| mitosis | part of eukaryotic cells division during which the cell nucleus divides |
| cytokinesis | division of the cytoplasm to form two separate daughter cells |
| prophase | first and longest phase of mitosis in which the genetic material of the nucleus condenses and the chromosomes become visible |
| centromere | region of the chromosome where the two chromatids attach |
| chromiatid | one of the two identical " sister" parts of a duplicated chromosome |
| centriole | structure in a animal cell that helps organize celldivision |
| metaphase | phase of mitosis in which the chromosomes line up across the center of the cell |
| anaphase | phase of mitosis in which the chromosomes seperate and move to opposite ends of the cell |
| telophase | phase of mitosis in which the distinct individual chromosomes begin to spread out into a tangle of chromation |
| cyclin | one of a family of proteins that regulates the cell cycle in eukaryotic cells |
| growth factor | one of a group of a external regulatory proteins that stimulate the growth and division of cells |
| apoptosis | process of programmed cell death |
| cancer | disorder in which some of the body's cells lose the ability to control growth |
| tumor | mass of rapidly dividing cells that can damage surrounding tissue |
| embryo | developing stage of a multicellular organisms |
| differentiation | process in which cells become specialized in structure and function |
| totipotent | cells that able to develop into any type of cell found in the body |
| blastocyst | stage of early development in mammals that consists of a hollow ball of cells |
| pluripotnet | cells that are capable of developing into most, but not all, of the body's cells types |
| stem cell | unspecialized cell that can give rise to one or more types of speialized cells |
| multiponet | cell with limited potential to develop into many types of differentiated cells |